import turtle

r = 36
w = 300
turtle.penup()
turtle.goto(0, w / 2)
turtle.pendown()

turtle.right( r*2 )
turtle.forward(w)
turtle.right( r*4 )
turtle.forward(w)
turtle.right( r*4 )
turtle.forward(w)
turtle.right( r*4 )
turtle.forward(w)
turtle.right( r*4 )
turtle.forward(w)

turtle.done()